Sunan an-Nasa'i 4867
سنن النسائي#4867SahihIt was narrated that 'Ubaidullah bin abi Bakr said:"I heard Ana's say: 'The Messenger of Allah said: 'the major sins are; associating others with Allah (shirk), disobeying one's parents, killing a soul (murder) and speaking falsely
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 45:162