Al-Baqara 2:196

And Complete Hajj and ‘Umrah for Allah. But if you are prevented, then [offer] whatever sacrificial animal is available, and do not shave your heads until the sacrificial animal reaches its place of sacrifice. But if anyone among you is sick or has an ailment of the scalp [and had his head shaved], then he must compensate by fasting, charity, or a sacrificial offering[96]. And when you are safe, then if anyone takes a break between ‘Umrah and Hajj, he must offer a sacrifice of whatever animal is available. However, if he cannot afford an offering, he should fast for three days during Hajj and seven days upon his return [home], making ten days in all. This is for those who are not residents of the Sacred Mosque. And fear Allah, and know that Allah is severe in retribution.

[96] Fasting three days, feeding six poor of Haram (sanctified area of Makkah), or slaughtering a sheep or goat and distributing it among the poor of Haram.

And complete the ḥajj and ʿumrah for Allāh. But if you are prevented, then [offer] what can be obtained with ease of sacrificial animals. And do not shave your heads until the sacrificial animal has reached its place of slaughter. And whoever among you is ill or has an ailment of the head [making shaving necessary must offer] a ransom of fasting [three days] or charity[71] or sacrifice.[72] And when you are secure,[73] then whoever performs ʿumrah [during the ḥajj months][74] followed by ḥajj [offers] what can be obtained with ease of sacrificial animals. And whoever cannot find [or afford such an animal] - then a fast of three days during ḥajj and of seven when you have returned [home]. Those are ten complete [days]. This is for those whose family is not in the area of al-Masjid al-Ḥarām. And fear Allāh and know that Allāh is severe in penalty.

[71] Feeding six needy persons.
[72] The slaughter of a sheep or goat.
[73] Under normal conditions, i.e., are not prevented.
[74] The months of Shawwāl, Dhul-Qaʿdah and Dhul-Ḥijjah.

196. And perform properly (i.e. all the ceremonies according to the ways of Prophet Muhammad صلى الله عليه وسلم), the Hajj and ‘Umrah (i.e. the pilgrimage to Makkah) for Allâh. But if you are prevented (from completing them), sacrifice a Hady (animal, i.e. a sheep, a cow, or a camel) such as you can afford, and do not shave your heads until the Hady reaches the place of sacrifice. And whosoever of you is ill or has an ailment in his scalp (necessitating shaving), he must pay a Fidyah (ransom) of either observing Saum (fasts) (three days) or giving Sadaqah (charity - feeding six poor persons) or offering sacrifice (one sheep). Then if you are in safety and whosoever performs the ‘Umrah in the months of Hajj before (performing) the Hajj, (i.e. Hajj-at-Tamattu‘ and Al-Qirân), he must slaughter a Hady such as he can afford, but if he cannot afford it, he should observe Saum (fasts) three days during the Hajj and seven days after his return (to his home), making ten days in all. This is for him whose family is not present at Al-Masjid-Al-Harâm (i.e. non-resident of Makkah). And fear Allâh much and know that Allâh is Severe in punishment.[44]

[44] (V.2:196) Islâm demolishes all the previous evil deeds and so does migration (for Allâh’s sake) and Hajj (pilgrimage to Makkah). [Al-Lu’lu’ wal Marjân , Vol.1, Ch.52, P.205]. The obligation of performing ‘Umrah and its superiority. Ibn ‘Umar رضي الله عنهما said, Hajj and ‘Umrah are obligatory for everybody." And Ibn ‘Abbâs رضي الله عنهما said, ‘Umrah is mentioned in conjunction with Hajj in the Book of Allâh عز وجل: "And perform properly Hajj and ‘Umrah for Allâh." (2:196).
Narrated Abu Hurairah رضي الله عنه: Allâh’s Messenger صلى الله عليه وسلم said, "(The performance of) ‘Umrah is an expiation for the sins committed (between it and the previous one). And the reward of Hajj Mabrûr (the one accepted by Allâh) is nothing except Paradise." (Sahih Al-Bukhâri, Vol.3, Hadîth No.1).

Perform the pilgrimage and the visit (to Makka) for Allah. And if ye are prevented, then send such gifts as can be obtained with ease, and shave not your heads until the gifts have reached their destination. And whoever among you is sick or hath an ailment of the head must pay a ransom of fasting or almsgiving or offering. And if ye are in safety, then whosoever contenteth himself with the visit for the pilgrimage (shall give) such gifts as can be had with ease. And whosoever cannot find (such gifts), then a fast of three days while on the pilgrimage, and of seven when ye have returned; that is, ten in all. That is for him whoso folk are not present at the Inviolable Place of Worship. Observe your duty to Allah, and know that Allah is severe in punishment.