It is narrated from Sayyiduna Jabir (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "A man's greeting by merely pointing with one finger is the practice of the Jews."
No one narrated this hadith from Thawr (may Allah have mercy on him) except Abu Khalid al-Ahmar (may Allah have mercy on him), and Uthman bin Abi Shaybah (may Allah have mercy on him) is alone in narrating it; and this hadith is narrated from the Messenger of Allah (peace and blessings be upon him) only with this chain.
Hadith Referenceالمعجم الأوسط / باب العين / 4437
Hadith Takhrij«أخرجه أبو يعلى فى «مسنده» برقم: 1875»