Is the following dhikr: "O Allah, this is the approach of Your night, and the departure of Your day, and the sounds of Your callers, so forgive us," followed by "O Allah, You know that these hearts have met upon Your love, united upon Your call, and pledged to support Your Sharia; so O Allah, strengthen their bonds, perpetuate their affection, guide them to their paths, fill them with Your light that never fades, expand our chests with the abundance of faith in You and beautiful reliance upon You, and O Allah, grant us life upon Your knowledge and cause us to die as martyrs in Your path, for indeed You are the best Protector and the best Helper," among the authentically transmitted adhkar and recited at sunset?

Summary of the answer:

The first supplication reported from Umm Salama (may Allah be pleased with her) at the time of the Maghrib Adhan (definition): "O Allah, this is the approach of Your night and the departure of Your day, and the sounds of Your callers, so forgive me"; Al-Albani graded it as weak.

The second supplication: "O Allah, Lord of this perfect call and the prayer to be offered, grant Muhammad Al-Wasilah and Al-Fadhilah, and raise him to the praised station which You promised him, indeed You do not break Your promise, O Most Merciful of those who show mercy"; it has not been reported in the books of Hadith (definition), though its meaning is correct, and there is no harm in supplicating with it collectively, but it should not be adhered to perpetually.