Such elderly women as are past the prospect of marriage,- there is no blame on them if they lay aside their (outer) garments, provided they make not a wanton display of their beauty: but it is best for them to be modest: and Allah is One Who sees and knows all things. An-Nur 24:60 ⧉
Tafsir:
In some of the preceding verses certain instructions regarding social behaviour are given. Now these verses were revealed, perhaps as a supplement to and an elaboration of them. For instance, one of the instructions given initially to women regarding the covering of the body was that they should cover their bosoms with scarves or sheets (verse 31). In verse 60 those old women who are past the marriageable age have been exempted from the general rule, and it is laid down that there is no harm in their not following it. These two sets of instructions could have been revealed at one and the same time, but there are four intervening paragraphs (ruku‘), in which different subjects have been dealt with. It is gathered from traditions that after the initial instructions had been revealed, some practical problems arose. Therefore, in clarification, these later verses were revealed. This shows that the Quran’s method is one of gradualness and not that of taking sudden steps. It was possible for God to have revealed all the instructions together at one time, but He chose to reveal them bit by bit, according to the circumstances.