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 <i>ad-Da'awal al-kabir</i>.

وَعَنْهُ قَالَ: كُنَّا نُؤْمَرُ بِالدُّعَاءِ عِنْدَ أَذَانِ الْمغرب. رَوَاهُ الْبَيْهَقِيّ