Al-A'raaf 7:31

O children of Adam, dress well for every prayer[7]. Eat and drink, but do not waste, for He does not like the wasteful.

[7] It is obligatory to wear the clothes while praying.

O children of Adam, take your adornment [i.e., wear your clothing] at every masjid,[366] and eat and drink, but be not excessive. Indeed, He likes not those who commit excess.

[366] Literally, "place of prostration," meaning any place that a Muslim prays upon the earth. The term may also refer specifically to a mosque.

31. O Children of Adam! Take your adornment (by wearing your clean clothes), while praying[3] and going round (the Tawâf of) the Ka‘bah, and eat and drink but waste not by extravagance, certainly He (Allâh) likes not Al-Musrifûn (those who waste by extravagance).

[3] (V.7:31) It is obligatory to wear the clothes while praying. And the Statement of Allâh عز وجل: "Take your adornment [(by wearing your clean clothes) covering completely the ‘Aurah (covering of one’s ‘Aurah means: while praying, a male must cover himself with clothes from the umbilicus of his abdomen up to his knees, and it is better that both his shoulders should be covered. And a female must cover all her body and feet except face, and it is better that both her hands are also covered)], while praying and going round (the Tawâf of) the Ka‘bah.
In how many (what sort of) clothes a woman should pray? ‘Ikrimah said, "If she can cover all her body with one garment, it is sufficient."
It is agreed by the majority of the religious scholars that a woman while praying should cover herself completely except her face, and it is better that she should cover her hands with gloves or cloth. but her feet must be covered either with a long dress or she must wear socks to cover her feet. This verdict is based on the Prophet’s statement (Abu Dâwûd).
Narrated ‘Âishah رضي الله عنها: Allâh’s Messenger صلى الله عليه وسلم used to offer the Fajr prayer and some believing women covered with their veiling sheets used to attend the Fajr prayer with him, and then they would return to their homes unrecognized. (Sahih Al-Bukhâri, Vol.1, hadîth No.368).

O Children of Adam! Look to your adornment at every place of worship, and eat and drink, but be not prodigal. Lo! He loveth not the prodigals.