Jabir bin Samurah (May Allah be pleased with him) reported:
After the Fajr (dawn) prayer the Prophet (ﷺ) used to sit crossed legged in the same place in which he had prayed till the sun shone brightly.[Abu Dawud]. (RU)
App reference (RU): Book 5, Hadith 8 (RU)
Arabic/English book reference (RU): Book 5, Hadith 821 (RU)