Sunan an Nasai
1274
Munkar+2

Malik bin Numair Al-Khuza'I, one of the inhabitants of Al-Basrah, narrated that:His father told him that he saw the Messenger of Allah (ﷺ) sitting when praying, putting his right forearm on his right thigh and raising his forefinger, which he had bent slightly, and he was supplicating

MunkarAbu Ghuddah
DaifAl-Albani