First of all the titles and subtitles of this site have to be defined. Concerning the term tradition it has two significations: a general and a specific one. However it does not have the meaning it has acquired today, such as 'customs' and 'usages'.

In its general meaning, tradition has to be understood in the sense of transmission of an element of the suprahuman level, as explained by René Guénon (Shaykh `Abd al-Wahîd Yahia).

In its more specific sense the term tradition also signifies the words and sayings reported from the Prophet Muhammad (may Allah bless him and grant him peace) which have been recorded in the hadith collections. So when speaking of the islamic Tradition we do not only mean the sayings and words of wisdom by the Prophet of islam, but also the entire islamic religion (Qur'ân, Sunnah, schools of law, spirituality, saintity, etc.)

Concerning the Arabic expression "al-Diin al-Qayyim", it is of quranic origin (Sura 10-105; Sura 30-30; Sura 98-5) and signifies the unchanging Religion in its perennial and universal character.

“Set your face towards pure religion (as true monotheist)”
Sura 10, verse 105

“Then set your face upright for (complying with the obligations of the) religion as true monotheist (hanîfan) and in accordance to the primordial nature (fitrah) created by Allah in which He has created men,”
Then Allah said: “There is no altering of Allah's creation; that is the right religion (al-Dîn al-Qayyim), but most people do not know.” Sura 30, verse 30

“And they were not enjoined anything except that they should serve Allah, as true monotheists (hunafa’) (being sincere to Him in obedience, upright), keeping up prayer and paying the poor-due. This is the true and unchangeable religion (al-Dîn al-Qayyim).” Sura 98, verse 5

This means to say that the islamic Tradition is characterised by being preserved from all alteration in its fundamental principles and in its essential doctrine, which has not always been the case with the earlier religions before Islam.

This preservation has been expressively attested by the divine Word in the following terms: “Surely We have revealed the Reminder (meaning the Qur’ân) and it is Us Who will most surely be its guardian.” Sura 15, verse 9

The universal character of the islamic Tradition has been formulated in the Qur'ân in the following terms: “And We have not sent you but to all human beings as a bearer of good news and as a warner, but most men do not know.” Sura 34, verse 28

Another significant characteristic of this islamic Tradition is the tolerance and indulgence as expressed by the Prophet (may Allah bless him and grant him peace) when he said: “I have been sent with the indulgent and tolerant monotheism (bu`ithtu bil-hanîfiyah al-samha')” a saying which is confirmed by the divine quranic Word: “And We have not sent you except as a mercy to the worlds.” Sura 21, verse 107

The conclusion to be drawn from these teachings is that the most knowledgeable being in respect of God can only be the most merciful one in respect to the creatures, in this world as well as in the next and who has the most universal vision of the essential truths. This is, has been and will always be the Prophet Muhammad - may Allah spread over him his unifying grace and His peace and over his family and his companions.