His wealth: He was very rich, v. 2. He was very heavy, so the Hebrew word signifies; for riches are a burden, and those that will be rich do but load themselves with thick clay, Hab. ii. 6. There is a burden of care in getting them, fear in keeping them, temptation in using them, guilt in abusing them, sorrow in losing them, and a burden of account, at last, to be given up concerning them. Great possessions do but make men heavy and unwieldy.

Matthew Henry (1662–1714) English writer, religious philosopher

Exposition of the Old and New Testament, Genesis 13:2 (1706)
    (Source)

On Genesis 13:2: "And Abram was very rich in cattle, in silver, and in gold." [KJV]. Referencing Habakkuk 2:6: "Woe to him that increaseth that which is not his! how long? / and to him that ladeth himself with thick clay!" [KJV]

Often just shortened to:

There is a burden of care in getting riches, fear in keeping them, temptation in using them, sorrow in losing them, and a burden of account, at last, to be given up concerning them.