It is narrated from Sayyiduna Tamim Dari (may Allah be pleased with him) that a person asked the Prophet (peace and blessings of Allah be upon him) about the man at whose hand someone accepts Islam. The Prophet (peace and blessings of Allah be upon him) said: "He will be more entitled to him and closer to him than all other people in life and in death."
Hadith Referenceمسند احمد / مسند الشاميين / 16948
Hadith Gradingحکم دارالسلام:إسناده ضعيف لانقطاعه، عبدالله بن موهب لم يدرك تميمة ، وتصريح عبدالله بن موهب بسماعه من تميم خطأ