The affix rhil comes optionally in denoting time not of the current day after the words kim , the sarvanāma and bahu etc.,
The anuvritti of छन्दसि is not read into this sutra. This is a general rule. Thus कर्हि or कदा 7.2.103, यर्हि or यदा, तर्हि or तदा ॥,