To this it may be imagined that the more sober, even among Sufis, made vehement objection. It fell under two heads. One was that of _kasb_, the gaining of daily bread by labor. The examples of the husbandman who casts his seed into the ground and then depends upon God, of the merchant who travels with his wares in similar trust, were held up against the wandering but useless monk. As always, traditions were forged on both sides. Said a man—apparently in a spirit of prophecy—one day to the Prophet, “Shall I let my camel run free and trust in God?” Replied the Prophet, or someone for him with a good imitation of his humorous common-sense, “Tie up your camel and trust in God.” The other head was the use of remedies in sickness. The whole controversy parallels strikingly the “mental science” and “Christian science” of the present day. Medicine, it was held, destroyed _tawakkul_. In the fourth century in Persia this insanity ran high and many books were written for it and against it. The author of one on the first side was consulted in an obstinate case of headache. “Put my book under your pillow,” he said, “and trust in God.” On both these points the usage of the Prophet and the Companions was in the teeth of the Sufi position. They had notoriously earned their living, honestly or dishonestly, and had possessed all the credulity of semi-civilization toward the most barbaric and multifarious remedies. So the agreement of Islam eventually righted itself, though the question in its intricacies and subtilties remained for centuries a thing of delight for theologians. In the end only the wildest fanatics held by absolute _tawakkul_. [Sidenote: SPECULATIVE SUFIISM]