Ka’b ibn Malik reported: The Prophet, peace and blessings be upon him, said, “Whoever seeks knowledge to impress the scholars, to argue with the foolish, or to attract the attention of people, Allah will admit him into Hellfire.” Source: Sunan al-Tirmidhī 2654

Ka’b ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said, “Two wolves roaming freely among a flock sheep are less destructive to them than the passion of a man for wealth and fame is to his religion.” Source: Sunan al-Tirmidhī 2376

Abu Hurayrah ” reported that the ruler of Yemen,appointed by the Persian emperor Kisra, sent two envoys to the Messenger !. When they came into his presence, he noticed that they had shaved their beards and let their moustaches grow big. Hating their ugly appearance, he turned his face away and said,
“Woe be to you, who told you to do so?” They replied: “Our lord (Kisra) did!”
The Messenger ! responded: “But my Lord, exalted and glorified be He, has commanded me to spare my beard and trim my moustaches.” [Recorded by Ibn Jarir at-Tabari, Ibn Sa’d, and Ibn Bishran. Verified to be hasan (good) by al-Albani (Fiqh us-Sirah by al-Ghazali p. 359)]

Rasulullah (Sallallahu Alayhi Wasallam) says: “Trim closely the moustache, and let the beard flow (Grow).” – Narrated Ibn Umar (R.A.) in Muslim, Hadith no. 498

“Rasulullah (Sallallahu Alayhi Wasallam) ordered us to trim the moustache closely and spare the beard” says Ibn Umar. – Muslim, Hadith no. 499

Rasulullah (Sallallahu Alayhi Wasallam)said: “Act against contrary to the polythesists, trim closely the moustache and grow the beard.” – Reported by Ibn Umar (R.A.) in Muslim, Hadith no. 500

Rasulullah (Sallallahu Alayhi Wasallam) said “Trim closely the moustache and grow the beard.” – Reported by Abu Hurairah (R.A.) in Muslim, Hadith no. 501

Rasulullah (Sallallahu Alayhi Wasallam) said: “Anyone who shaves has no claim to the mercy of Allah” – Reported by Ibn Abbas (R.A.) in Tibrabi