It is narrated from Sayyiduna Tamim Dari (may Allah be pleased with him) that a person asked the Prophet (peace and blessings be upon him) about the man at whose hand someone accepts Islam. The Prophet (peace and blessings 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 / 16944
Hadith Gradingحکم دارالسلام:إسناده ضعيف لانقطاعه، عبدالله بن موهب لم يدرك تميمة، وتصريح عبدالله بن موهب بسماعه من تميم خطأ