Signs of Laylat-ul-Qadr

Q 1: Is seeing a light coming from the sky by the righteous considered as one of the signs of Laylat-ul-Qadr (the Night of Decree)? It is attributed to some righteous people that they saw this light and this sign is widely common among people. I know some righteous people (although none can verify this but Allah) who saw this sign. What is the veracity of this sign? Does it have a basis in Allah's Purified Shar` (Law)?

A 1: We do not know a basis in Allah's Purified Shar` that indicates that this is (Part No. 9; Page No. 318) one of the signs of Laylat-ul-Qadr.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.