It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that he (peace and blessings be upon him) said: "When one of you prostrates, he should place his knees before his hands, and he should not kneel down as a camel kneels."
However, Abdullah bin Sa'id al-Maqburi is da'if (weak), and the narration that contradicts it is narrated only by Muhammad bin Abdullah bin al-Hasan, and from him only by al-Darawardi.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2635