Psalms 94:18 Halakhah

אִם־אָ֭מַרְתִּי מָ֣טָה רַגְלִ֑י חַסְדְּךָ֥ יְ֝הוָ֗ה יִסְעָדֵֽנִי׃

If I say: 'My foot slippeth', Thy mercy, O LORD, holdeth me up.

Read halakhic rulings (Jewish law) on Psalms 94:18: and classical halakhic sources.