Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
muslim:2255c – [Chain 1] Yaḥyá b. Yaḥyá > al-Muʿtamir b. Sulaymān [Chain 2] Zuhayr b. Ḥarb > ʿAbd al-Raḥman b. Mahdī

"He (that is Umayya b. Abu Salt) was about to become a Muslim", and in the hadith transmitted on the authority of Ibn Mahdi (the words are) "He was almost a Muslim in his poetry."  

مسلم:٢٢٥٥c – وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى أَخْبَرَنَا الْمُعْتَمِرُ بْنُ سُلَيْمَانَ ح وَحَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ كِلاَهُمَا عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ الرَّحْمَنِ الطَّائِفِيِّ عَنْ عَمْرِو بْنِ الشَّرِيدِ عَنْ أَبِيهِ قَالَ

اسْتَنْشَدَنِي رَسُولُ اللَّهِ ﷺ بِمِثْلِ حَدِيثِ إِبْرَاهِيمَ بْنِ مَيْسَرَةَ وَزَادَ قَالَ إِنْ كَادَ لَيُسْلِمُ وَفِي حَدِيثِ ابْنِ مَهْدِيٍّ قَالَ فَلَقَدْ كَادَ يُسْلِمُ فِي شِعْرِهِ