Wabisah (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) saw a man who was praying alone behind the rows. He (peace and blessings be upon him) said: "O you who pray alone! Why did you not join the row?" He said: "Why did you not pull a man towards you who would stand with you? Pray again."
Only al-Sari bin Isma'il narrated it, and he is da'if (weak).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5211