The affix liṅ (Benedictive) comes after a root when the word yad is in composition and the words 1. kāla 2. samaya 3. velā occur in construction.,
This ordains the Potential and supersedes the Infinitive in 'tumun'. Thus कालः, समयः, वेला वा यद् भवान् भुञ्जीत 'it is time that your honor should take your meals'.,