Qatada قتادة · The Book of Salah

"How can the Salah be shortened as Allah says: There is no sin on you if you shorten As-Salah (the prayer) if you are in fear?" Ibn 'Umar said: "O son of my brother! The Messenger of Allah (ﷺ) came to us when we had gone astray and he taught us. One of the things that he taught us was that Allah, the Mighty and Sublime, has commanded us to pray two Rak'ahs when traveling." An-Nisa' 4:101.

"The Messenger of Allah (ﷺ) said: 'The covenant that stands between us and them is the Salah; whoever abandons it, he has committed disbelief.'"

"The Messenger of Allah (ﷺ) said: 'There is nothing between a person and disbelief except abandoning Salah.'"

"I heard the Messenger of Allah (ﷺ) say: 'He will never enter the Fire, the one who prays before the sun rises and before it sets.'"