Salim bin Abdullah bin Umar narrates from his father (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) ordered that the blade of the knife be sharpened and that it be hidden from the animals, then he said: "When one of you slaughters, let him be quick about it."
Ibn Lahi'ah narrated it thus, with a good connected chain.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19139