Jami` at-Tirmidhi 4
جامع الترمذي#4Da'ifJabir bin 'Abdullah, may Allah be pleased with them, narrated that :Allah's Messenger said: "The key to Paradise is Salat, and the key to Salat is Wudu
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih Lighairihi
Al-AlbaniSahih
Zubair Ali ZaiDaif
In-book reference: 1:4