Qays bin Abbad (may Allah have mercy on him) said: The Companions of the Messenger (peace and blessings be upon him) (may Allah be pleased with them) disliked raising the voice at funerals, at the time of fighting and at the time of dhikr (remembrance).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنائز / 7182