Samurah bin Jundub (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) forbade us from giving four names: "Aflah, Rabah, Yasar and Nafi'."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19309
Samurah bin Jundub (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Four phrases are most beloved to Allah: 'La ilaha illallah' (There is no god but Allah), 'Allahu akbar' (Allah is the Greatest), 'Subhan Allah' (Glory be to Allah) and 'Al-hamdu lillah' (All praise is for Allah). It does not matter which of them you say first. But do not name your boy Yasar, Rabah, Najih or Aflah, because when you ask, 'Is he here?' and he is not, the answer will be: 'He is not here.'" He (peace and blessings be upon him) mentioned four names and did not add any more.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19310
Sayyiduna Jabir (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) intended to forbid the names Ya'la, Barakah, Aflah, Yasar and Nafi', but he (peace and blessings be upon him) remained silent and said nothing. Then the Messenger of Allah (peace and blessings be upon him) did not forbid it until his death. Sayyiduna Umar (may Allah be pleased with him) also intended to forbid such names, but then left it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19311
Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "On the Day of Resurrection, the worst name in the sight of Allah Almighty will be that of a man who is named 'Malik al-Amlak' (King of Kings)." In the narration of Abu Bakr bin Abi Shaybah: "There is no king except Allah Almighty."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19312