It was narrated from 'Abdullah that the shorter Surah, that speaks of women (At-Talaq), was revealed after Al-Baqarah.
Sunan an-Nasa'i Book 27, Hadith 135
← Previous Hadith "Whoever wants, I will meet and debate with him and invoke the curse of Allah upon those who lie. The Verse: 'And for those who are pregnant (whether they are divorced or their husbands are dead), their 'Iddah (prescribed period) is until they lay down their burden.' was only revealed after the Verse about women whose husbands die. 'When a woman whose husband has died gives birth, it becomes permissible for her to marry.'" This is the wording of Maimun (one of the narrators).

Sunan an-Nasa'i Book 27, Hadith 134 Next Hadith → "She should have a Mahr like that of women like her, no less and no more; she has to observe the 'Iddah, and she is entitled to inherit." Ma'qil bin Sinan Al-Ashja'i stood up and said: "The Messenger of Allah passed a similar judgment among us concerning Birwa' bint Washiq." And Ibn Masud rejoiced at that.

Sunan an-Nasa'i Book 27, Hadith 136