Jami` at-Tirmidhi 185

جامع الترمذي#185Sahih

Abdullah bin Mughaffal narrated that :the Prophet said: "Between every two calls (to prayer) there is a Salat for whoever wills

Scholarly Authentication

We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:

Ahmad Muhammad ShakirSahih

Al-AlbaniSahih

Bashar Awad MaaroufHasan Sahih

Zubair Ali ZaiSahih - Agreed Upon

In-book reference: 2:37