Dic: dip into

• Just when she was ready to dip into her savings, Greg hastened to her rescue.
• The local government voted to dip into the emergency fund to pay for repairing the old town hall.

1. VERB | If you dip into a sum of money that you had intended to save, you use some of it to buy something or pay for something.
2. to use a small amount of something.

...... Cobuild, http://idioms.thefreedictionary.com/dip+into

cf. VERB | If you dip into a book, you have a brief look at it without reading or studying it seriously.

• a chance to dip into a wide selection of books on Tibetan Buddhism.