綽綽有餘

From the Classic of Poetry, poem 223 (《詩經·小雅·角弓》):

此令兄弟，綽綽有裕。
不令兄弟，交相為瘉。 [Pre-Classical Chinese, trad.]

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此令兄弟，绰绰有裕。
不令兄弟，交相为愈。 [Pre-Classical Chinese, simp.]

From: The Classic of Poetry, c. 11^th – 7^th centuries BCE, translated based on James Legge's version

Cǐ lìng xiōngdì, chuòchuò yǒu yù.
Bù lìng xiōngdì, jiāoxiàng wéi yù. [Pinyin]

Those brothers who are good, Continue to display much generous feeling; But between brothers who are not good, Their intercourse is marked by troubles.