It is narrated from Hazrat Jabir (may Allah be pleased with him) that the fingers of the Prophet (peace and blessings be upon him) were separate from each other (they were not joined together).
Hadith Referenceمسند احمد / أول مسند البصريين / 20950
Hadith Gradingحکم دارالسلام:إسناده ضعيف، سلمة بن حفص متهم، ويحيي بن يمان ضعيف يعتبر به