It is narrated from Ishaq bin Abdullah that the governor of Madinah Munawwarah, Walid bin Utbah, sent him to Sayyiduna Ibn Abbas (may Allah be pleased with them both) and said to him, "O my nephew, go and ask him how the Messenger of Allah (peace and blessings be upon him) performed (the supplication and prayer) for rain on the day he prayed for rain with the people." Ishaq says that I presented myself before Sayyiduna Ibn Abbas (may Allah be pleased with them both). I asked, "O Abu al-Abbas, on the day the Messenger of Allah (peace and blessings be upon him) prayed for rain, how did he perform the supplication and prayer for rain?" He replied, "The Messenger of Allah (peace and blessings be upon him) went out with utmost humility and simplicity, and he performed the prayer for rain in the same manner as he would perform the Eid al-Fitr and Eid al-Adha prayers."
And the evidence against the statement of those among the Tabi'in who claimed that the daytime prayer is silent—meaning that one does not recite aloud in any of the daytime prayers—is what Abu Bakr said: In the report of Ma'mar, from al-Zuhri: He recited aloud.
Hadith Referenceصحيح ابن خزيمه / جماع أبواب صلاة الاستسقاء وما فيها من السنن / 1419
It is narrated from Ishaq bin Abdullah that the governor of Madinah Munawwarah, Walid bin Utbah, sent him to Sayyiduna Ibn Abbas (may Allah be pleased with them both) and said to him, "O my nephew, go and ask him how the Messenger of Allah (peace and blessings be upon him) performed (the supplication and prayer) for rain on the day he prayed for rain with the people." Ishaq says that I presented myself before Sayyiduna Ibn Abbas (may Allah be pleased with them both). I asked, "O Abu al-Abbas, on the day the Messenger of Allah (peace and blessings be upon him) prayed for rain, how did he perform the supplication and prayer for rain?" He replied, "The Messenger of Allah (peace and blessings be upon him) went out with utmost humility and simplicity, and he performed the prayer for rain in the same manner as he would perform the Eid al-Fitr and Eid al-Adha prayers."
And the evidence against the statement of those among the Tabi'in who claimed that the daytime prayer is silent—meaning that one does not recite aloud in any of the daytime prayers—is what Abu Bakr said: In the report of Ma'mar, from al-Zuhri: He recited aloud.
Abbad bin Tamim narrates from his uncle that when the Messenger of Allah (peace be upon him) went out for the prayer of Istisqa (prayer for rain), he faced the Qiblah and turned his back to the people. He turned his cloak inside out, led them in two rak'ahs, and recited (Qur'an) in them. And he recited aloud in them.
Hadith Referenceصحيح ابن خزيمه / جماع أبواب صلاة الاستسقاء وما فيها من السنن / 1420