What is written on the Bill: Kiddushin 9a
The text of the Bill, as a Law Spoken to Moshe at Sinai: Kiddushin 9a
If the Bill sets a time of acquisition following the death of the giver: Gittin 9b
At what point the sale takes effect: Gittin 10b
Whether the person selling the item must write the bill of sale: Gittin 20b
Whether the bill may be written, if the purchaser is not present: Kiddushin 27a
One may acquire a plant which is rooted in the ground with a Bill: Gittin 22a
Considering a bill on sale of land to be like a "leash on the land": Kiddushin 27a