(31) باب أَوْقَاتِ الصَّلَوَاتِ الْخَمْسِ
'A'isha, the wife of the Apostle (ﷺ), said that the Messenger of Allah (ﷺ) said the afternoon prayer (at the time) when the sun shone in her apartment and its shadow did not extend beyond her apartment.
Reference: Sahih Muslim 611 c
In-book reference: Book 5, Hadith 217
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1271