Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) reports that the Messenger of Allah (peace and blessings be upon him) said: "The supplication that is accepted the quickest is the supplication of an absent person for another absent person."
Hadith Referenceمسند الشهاب / 1328
Hadith Gradingمحدثین:إسناده ضعيف
Hadith Takhrij«إسناده ضعيف ، وأخرجه أبو داود : 1535 ، والترمذي : 1980 ، الادب المفرد : 623» عبدالرحمٰن بن زیادضعیف ہے ۔