Is the hadith "hasten early to give charity" authentically attributed to the Prophet?

Summary

This hadith was narrated by al-Tabarani through Ali, but that chain is very weak because Isa bin Abdullah narrated it alone and hadith scholars criticised him as a weak narrator who transmitted fabricated reports. The Anas chain reported by al-Baihaqi as marfu' was judged incorrect by al-Baihaqi himself, since the correct form is mauquf, the saying of Anas rather than the Prophet's words. In meaning, charity still has many virtues as stated in authentic hadiths.

Written in our own words from the original fatwa — check the source before acting on it.