Azzah bint Iyad bin Abi Qirsafah narrated: The Romans had taken captive a son of Sayyiduna Abu Qirsafah (may Allah be pleased with him). Whenever the time of any prayer came, Abu Qirsafah would climb the wall of Asqalan and call out: O so-and-so, the prayer! And he (the son) would hear his voice while (a captive) in the land of the Romans.
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 2510