Not graded
Mishkat al-Masabih 679
وَعَنْهُ قَالَ: كُنَّا نُؤْمَرُ بِالدُّعَاءِ عِنْدَ أَذَانِ الْمغرب. رَوَاهُ الْبَيْهَقِيّ
He said, “We used to receive command to make a supplication when the call to the sunset prayer was being made.” Baihaqi transmitted it in ad-Da'awal al-kabir.
Cited in Mishkat al-Masabih (No. 679).