Oracle Text

Until end of turn, target player can't cast instant or sorcery spells, and that player can't activate abilities that aren't mana abilities.

Draw a card.

Card Rulings

10/4/2004 Abeyance prohibits activated abilities of cards which are not on the battlefield.
10/4/2004 Abeyance never prevents mana abilities from being activated.
10/4/2004 Abeyance does not affect abilities which are not activated, such as static abilities and triggered abilities. It also doesn’t stop the declaration of attackers or blockers.
8/1/2008 This can’t be used as a counterspell. It will have no effect on spells which were on the stack when it was cast, nor on those cast in response to it.