Sayyiduna Ibn Umar (may Allah be pleased with them both) narrates that the Prophet (peace and blessings be upon him) would pray facing his camel, while it lay crosswise between him (peace and blessings be upon him) and the qiblah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3460