Reference: Siyar A’laam an-Nubalaa v7 p296
said:
I saw ath-Thowree in the Haram (al-Masjid al-Haraam, Makkah) after maghrib; He prayed [the maghrib prayer] and then went into prostration, and did not rise [from the prostration] until the call for the ‘ishaa prayer was made.
