I found further information regarding this subject in the attached link. I hope that may some help for others looking answers to a similar question.http://static.sirimangalo.org//mahasi/A ... 0Sutta.htm
The extract from this Sutta as follows.
It is important to bear in mind that for the sincere yogī conformity to the moral precepts is to be natural and spontaneous and does not require deliberate effort or a sense of self-imposed duty. It implies moral purity rooted in freedom from evil desire and violent, evil passions. This is not to say that initially there is no need for the yogī to exercise self-restraint to make himself morally pure. What we mean is that he should aim at moral purity that is invulnerable to any violent desire to commit moral transgressions. Therefore he needs to examine himself to see whether he has achieved such kind of moral purity. Otherwise he may run the risk of being deluded like one of my former disciples.
Once a lay man came to me. He was not an ordinary person but an educated and well-informed Buddhist. He said that after he had meditated for several times he was declared to be a sotāpan by his teacher. In the Piṭaka there is no mention, no instance of such a verdict being given by Arahat other than the Buddha. We always consider it inadvisable to make such kind of judgment. On the other hand we only give sermons on the stages of insight-knowledge that will provide the basis for assessing one' spiritual progress.
Nevertheless, because of his strong faith in his teacher, the man believed himself to be a sotāpan and observed the five precept strictly. Then one day he reported his religious experience to an elderly monk. The 90-year old monk still living and well versed in the Piṭaka is intimate with me. The man told the old monk about his vision of the elements and phenomena evaporating during his practice of meditation and about the verdict of his teacher.
Then the learned Sayādaw said that he was talking nonsense and that there was nothing to warrant his understanding of the Dhamma, let a lone his claim to be a sotāpan Ariya. The disillusioned man told me that after his interview with the outspoken Sayādaw, he no longer cared much for the strict observance of the five precepts. I advised him not to do like that but to continue to lead a good moral life, whatever other people said about him. It is necessary for the yogī to avoid becoming a self-styled sotāpan like that lay disciple.