Reference: Siyar A’laam an-Nubalaa. – Volume 4, Page 264
On the authority of al-A’mash, who said:
If any member of the household entered upon ‘Abdur-Rahmaan ibn Abee Laylaa while he was [standing the night] praying, he would immediately jump into bed [out of humility, and remaining sincere in his worship to Allaah, and being far removed from showing off].