Jami` at-Tirmidhi 435
جامع الترمذي#435Da'ifAbu Hurairah narrated that:Allah's Messenger (S) said: "Whoever prays six Rak'ah after Al-Maghrib, and he does not speak about anything between them, then they will be counted for him as twelve years of worship
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirVery Daif
Al-AlbaniVery Daif
Bashar Awad MaaroufDaif
Zubair Ali ZaiDaif
In-book reference: 2:288