Matthew Poole and continuators on 1 Corinthians 7:6

6 But I speak this by permission, and not of commandment .

Some refer these words to all that had gone before in this Chapter; but the best Interpreters rather refer them to what went immediately before in the preceding verse, declaring, that he had no express command from God, as to those things of abstaining for a time for Fasting and Prayer, and then coming together again, but he spake what he judged equitable and reasonable; but as to particular persons, they ought to judge and govern themselves according to their particular circumstances.